Re: Shared memory IPC using NIO memory-mapped files -- anyone done this?

On 8/18/07, Randall R Schulz <[email protected]> wrote:
>
> In any decent operating system, memory-mapped file pages are kept in
> core as much as other concurrent file access and RAM demand allows.
> Assuming one's (system-wide) working set does not exceed physical RAM,
> paging of memory-mapped file contents is probably not much of a
> problem.
>
> What's more, since the kernel manages memory globally, it can optimize
> with more comprehensive information than any single process (easily)
> could.


It's not a RAM disk. It still has to write the data to disk which you don't
want when you're just passing data between processes.

Bob

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